Originally Posted by Ekid2
I added live rock well over a week ago. My levels are still perfect by my tests, but there is brown algae all over the rocks, sand, and now the glass of the tank. Is this normal? Can I do anything about it?
Diatoms, it's normal in new tanks. Nothing to worry about. You should use RO water cause tap water can cause diatoms too! It will eventually go away on it's own. I would just siphon it out during water change. :happyfish